The Cisco Unified Operations Manager offers the following diagnostic tests to provide performance and connectivity details about different elements of the Cisco Unified Communications infrastructure:
Phone Status Tests
Phone status tests use Cisco IOS IP Service Level Agreement (IP SLA) technology to monitor the status of key phones in the network. You can define tests for selected IP phones that are executed based on a reoccurring testing schedule. These tests send IP SLA-based pings from an IP SLA-capable device (for example, a switch, a router, or a voice router) to the selected IP phones or, optionally, pings from Cisco Unified Operations Manager to the IP phones.
For more detailed information on using phone status tests, see Using Phone Status Testing 
in the User Guide for Cisco Unified Operations Manager.
Synthetic Tests
Synthetic tests are used to measure the availability of voice applications by simulating end-user activity. Synthetic tests verify whether voice applications can service requests from a user, such as whether phones can register with a Cisco Unified CallManager. Synthetic tests use synthetic phones to measure the availability of voice applications by emulating user actions. For example, a synthetic test places a call between clusters and then checks to see if the call is successful. Synthetic tests are available for the following Cisco Unified Communications elements:
•
Cisco Unified CallManager and Cisco Unified CallManager Express
•Cisco TFTP Server
•Cisco Unified Emergency Responder
•Cisco Conference Connection
•Cisco Unity and Cisco Unity Express
For more detailed information on using synthetic tests, see Using Synthetic Tests in the User Guide for Cisco Unified Operations Manager.
Node-to-Node Tests
Node-to-node tests monitor the response time and availability of multiprotocol networks on both an end-to-end and a hop-by-hop basis. After collecting this data you can use the Cisco Unified Operations Manager graphing function to examine changes in network performance metrics. You can select, display, and chart network performance data in real time. These tests also enable you to perform a probable path trace between two endpoints and the report on any outages or problems on intermediate nodes in the path.
For more detailed information on using node-to-node tests, see Using Node-to-Node Tests in the User Guide for Cisco Unified Operations Manager.